Home / 696,921.80-1,045,382.70-431,201.30

Finding the Fourth Proportional to 696,921.80, 1,045,382.70 and 431,201.30

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Solution

The fourth proportional to 696,921.80, 1,045,382.70 and 431,201.30 is: 646,801.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,921.80 : 1,045,382.70 = 431,201.30 : x
  2. Step 2: Convert to fraction form
    696,921.80/1,045,382.70 = 431,201.30/x
  3. Step 3: Cross multiply
    696,921.80x = 1,045,382.70 × 431,201.30
  4. Step 4: Simplify right side
    696,921.80x = 450,770,379,237.51
  5. Step 5: Solve for x
    x = 450,770,379,237.51/696,921.80
  6. Step 6: Final answer
    x = 646,801.95

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.